Content of the invention
It is an object of the invention to provide a kind of bearing test device, cannot be applied to solving current bearing test device
The problem of miniature bearing.
For achieving the above object, a kind of technical scheme of bearing test device of the present invention is：Bearing test device, including
Test head assembly, described test head assembly includes left and right bushing, and described test head assembly also includes positioning bushing, described
Positioning bushing coaxially fix with left and right bushing.
Described test head assembly also includes radial loaded set, and described bearing test device includes radial loaded mechanism,
Described positioning bushing is provided with the radial loaded mechanism perforation for passing through for radial loaded mechanism.
Described radial loaded puts and is provided with rotation stop part, and described left and right bushing is provided with positioning corresponding with rotation stop part
Hole, described rotation stop part stretches into described positioning in the hole.
Described radial loaded puts and is provided with for positioning end cap, institute with the examination bearing of accompanying accompanying examination bearing outer ring location fit
That states accompanies examination bearing positioning end cap to pass through positioning head bolts to be fixed on radial loaded and put, and described positioning head bolts stretch into
Described positioning in the hole constitutes described rotation stop part.
Described left and right bushing is fixedly connected on the left and right end face of positioning bushing by flange arrangement.
Described left and right bushing is fixedly connected on the left and right end face of positioning bushing by flange arrangement, described positioning
Bushing is provided with radial loaded mechanism perforation along the positioning positioning bushing louvre that diametrically arranges of bushing, described radial direction
Load to put and be provided with least two radial loaded set louvres connecting with louvre.
Described radial loaded set is left and right to be respectively arranged at two ends with left and right rotation stop part, and described left bushing is provided with and is stopped with a left side
Turn the part left bushing location hole that stretches into for left rotation stop part of correspondence, right bushing is provided with corresponding with right rotation stop part to be stretched for right rotation stop part
The right bushing location hole entering, described left bushing location hole runs through left bushing in left-right direction, and right bushing location hole is along right and left
To running through right bushing, left and right bushing location hole is all connected with described radial loaded mechanism perforation.
Described bearing test device also includes axially loaded mechanism, described bearing load maintainer and/or radial loaded
Mechanism is flexible loading mechanism, and described flexible loading mechanism includes loading screw rod and the loading that housing is threadeded with housing
Head, is provided with loading spring between described loading head and loading screw rod, described loading spring edge to load screw rod extended line is
The circumferencial direction of axis is uniformly provided with least three；Described shell internal guide is equipped with spring mounting seat, and described spring is pacified
Dress seat is provided with attachment screw perforation, and in attachment screw perforation, guiding is equipped with attachment screw, and attachment screw is threaded with spring
Top pressure seat, described loading spring is folded between spring top wedge and spring mounting seat and is set in described attachment screw
Described housing is provided with to be applied stressed pressure piece and is arranged on pressure piece and loading to loading screw rod outer peripheral face
Flexible top casting die between screw rod.
Described pressure piece is to be threaded on housing to be used for applying stressed plug, institute to the outer peripheral face loading screw rod
The flexible top casting die stated is to be arranged on plug and load the flexible resisting force column between screw rod.
Beneficial effects of the present invention are：The test head assembly of bearing test device includes co-axially fixed with left and right bushing
Positioning bushing, carries out centering positioning by positioning bushing to left and right bushing during assembling, ensure that the axiality of left and right bushing,
And then the axiality of the left and right test bearing of guarantee, reduce the coaxiality error of left and right test bearing, with current by left and right lining
Cover the bearing test device that is fixed on base to compare, the positioning bushing of the bearing test device of the present invention ensure that left and right
The axiality of bushing, and then improve the coaxial accuracy of left and right test bearing, solving current bearing test device cannot fit
Problem for miniature bearing.
Further, described radial loaded covers left and right two ends and is provided with rotation stop part, described left and right bushing be provided with
The corresponding location hole of rotation stop part, described positioning in the hole is inserted, in radial loaded mechanism not diameter in one end of described rotation stop part
Can prevent radial loaded set from rotating to rotation stop part when loading set to apply active force.
Further, described left and right bushing is fixedly connected on the left and right end face of positioning bushing by flange arrangement,
It is fixedly connected with positioning bushing by flange arrangement, convenient installation, and is easy to process, flange arrangement also ensure that simultaneously
The axiality of left and right bushing.
Further, described radial loaded is put and is provided with for being determined with the examination bearing of accompanying accompanying examination bearing outer ring location fit
Position end cap, described accompany examination bearing positioning end cap to pass through positioning head bolts and be fixed on radial loaded to put, described positioning end
Lid screw stretches into described positioning in the hole and constitutes described rotation stop part, and positioning head bolts can either be fixed and accompany examination bearing end
Lid, can limit radial loaded set again and rotate, assembling structure is simple.
Further, described positioning bushing is provided with the positioning bushing louvre connecting with radial loaded mechanism perforation,
Described radial loaded is put and is provided with least two radial loaded set louvres being connected with louvre, it can be avoided that positioning bushing
Cause to accompany the damage of examination bearing, the precision of impact result of the test with the temperature overheating in radial loaded set.
Further, described housing is provided with and loading screw rod outer peripheral face is applied stressed pressure piece and is arranged on pressure
Part and load flexible top casting die between screw rod, to loading on the premise of screw rod applies identical active force, by pressure piece and
The precession amount loading screw rod after screw rod applying resistance is less to loading for flexible top casting die, and the loading accuracy loading screw rod is higher.
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
The specific embodiment 1 of the bearing test device of the present invention, as shown in Figures 1 to 6, bearing test device includes frame
1st, it is arranged on test head assembly 2, the electro spindle for being in transmission connection that installation test bearing is used on frame with test head assembly 2
Drive system 3 and test head assembly be connected to test bearing outer ring apply radial load radial loaded mechanism 4 and
Test head assembly is connected to the axially loaded mechanism 5 of the outer ring applying axial load to test bearing and is driven with electro spindle
System is connected as electro spindle drive system and provides the cooling water tank 6 of cooling.In the present embodiment, bearing test device is double
Structure, that is, test head assembly, electro spindle drive system, axially loaded mechanism, radial loaded mechanism are equipped with two sets.
Workbench 12 is installed with frame 1, workbench is installed with mounting seat 13, electro spindle drive system 3 is fixing
In mounting seat 13.Base 14 is additionally provided with mounting seat 13, test head assembly 2 is fixed on base 14.Mounting seat 13 passes through spiral shell
Nail is fixed on workbench.The bottom of frame 1 is provided with rolling castor 16, is provided with vent window on rear side of frame.Test head assembly 2 is wrapped
Include test head gland 21, radial loaded mechanism 4 is fixedly connected on test head gland 21.
Electro spindle drive system 3 includes motor 31 and electric machine main shaft 32, and electric machine main shaft 32 is provided with electric machine main shaft shaft coupling
Test head assembly 2 includes testing main shaft 22, and test main shaft 22 right-hand member is provided with and is flexible coupling with electric machine main shaft shaft coupling 33
Test main spindle coupling 221, in the present embodiment, test main spindle coupling 221 and electric machine main shaft shaft coupling 33 pass through nylon
Restrict and connect, realization test main shaft is flexible coupling with electric machine main shaft, realize electric machine main shaft and test main shaft under high-speed rotation
It is stably connected with, in other embodiments, test main shaft can be directly connected to by rubber ring with electric machine main shaft.
Test main shaft 22 on back-to-back be equipped with left and right accompany examination bearing, a left side accompany examination bearing 231 by being arranged on test main shaft
Shaft shoulder positioning on 22, a left side accompanies the left side of examination bearing 231 to be provided with spacer 232.The right side of spacer 232 is by being located at test main shaft
The shaft shoulder position and be connected to a left side and accompany on the inner ring of examination bearing 231, the left side of spacer 232 is used for and left test bearing 233
Inner ring end face location fit, the part that test main shaft is in spacer 232 left side is provided with left test bearing construction section.Test main shaft
Upper install the right side accompany examination bearing 234, the structure of right test bearing 235 and install on the left of accompany examination bearing 231, left test bearing 233
Structure is identical, repeats no more.
The left end of test main shaft 22 is provided with the nut 236 for positioning assembling left side test bearing, left test bearing 233
Inner ring left end face is coordinated with nut 236 top pressure.The right-hand member of test main shaft 22 is provided with for positioning assembling right side test bearing
Right bearing installation set 237, the left side of right bearing installation set 237 is coordinated with its right end face top pressure of right test bearing inner ring, right
The right side of bearing mounting sleeve 237 is coordinated with main spindle coupling 33 top pressure.
Test head assembly also includes the radial loaded set 24 for being fixedly connected with the left and right outer ring accompanying examination bearing.Radially
The left and right two ends of loading set 24 are provided with accompanies examination bearing positioning end cap 241, accompanies examination bearing to position end cap 241 and passes through to position end cap spiral shell
Nail 242 is fixed on the end face at left and right two ends of radial loaded set 24, accompanies the cycle surface of examination bearing to try bearing positioning end with accompanying
Caping press-fit is to realize radial loaded set and being fixedly connected of accompanying the outer ring trying bearing.
Test head assembly includes left bushing 25 and the right lining for supports right test bearing for supporting left test bearing
Set 26, left and right bushing is separately positioned on the left and right two ends of test main shaft 22, in order to ensure the axiality of left and right bushing, and then
Improve the coaxial precision of left and right test bearing, left bushing 25 is arranged with positioning bushing 27, left bushing with the periphery of right bushing 26
25th, right bushing 26, positioning bushing 27 are coaxially fixed.The left end of left bushing 25 is provided with left bushing flange arrangement 251, right bushing 26
Right side is provided with right bushing flange arrangement 261, and left bushing flange arrangement 251 passes through left side screw with the left side of positioning bushing 27
252 are fixedly connected, and right bushing flange arrangement 261 is fixedly connected by right side screw 262 with the right side of positioning bushing 27.Fixed
Position bushing 27 is fixed on base 14.Test head assembly also includes axially loaded disk 238, and axially loaded disk 238 is arranged on left lining
In set 25, the right side of axially loaded disk is used for the left side top pressure cooperation with the outer ring of left test bearing.
In the present embodiment, in order to prevent positioning bushing from relatively rotating with left bushing, left bushing 25 is provided with and left side
The corresponding left bushing location hole 253 of screw, left bushing location hole 253 runs through entirely left bushing 25 in left-right direction, positions end cap
The screw cap of screw 242 stretches into left bushing positioning in the hole in case fastening position bushing and left bushing relatively rotate.Also same on right bushing
Sample be provided with and position head bolts 242 the cooperation of screw cap rotation stop right bushing location hole 263, right bushing location hole 263 is along a left side
Right direction runs through right bushing.Positioning head bolts 242 constitute the rotation stop part with location hole cooperation, in other embodiment, left bushing
The nut that location hole not through left bushing, can position head bolts can not stretch into left bushing positioning in the hole, and in positioning lining
On the left side of set, in addition other rotation stop parts such as setting rotation stop pin stretch into left bushing positioning in the hole to limit positioning bushing and left lining
Cover relatively rotates, and in the same manner, right bushing positioning pore structure can be identical with left bushing positioning pore structure, and positioning bushing can left and right
It is symmetrical arranged.
Radial loaded mechanism 4 is arranged on the radial side of the test main shaft 22 of test head assembly 2, and positioning bushing 27 is provided with use
In the radial loaded mechanism perforation 271 making radial loaded mechanism pass through top pressure on radial loaded set.Radial loaded mechanism 4 includes
Coordinate the radial loaded 41 that test bearing is loaded for covering 24 and abutting with radial loaded, radial loaded 41 passes through and radially adds
Mounted mechanism perforation 271 and radial loaded set 24 top pressure cooperation.Axially loaded mechanism 5 includes coordinating with axially loaded disk 238 top pressure
Axially loaded 51.In the present embodiment, radial loaded mechanism and axially loaded mechanism are flexible loading mechanism.Radially add
When mounted mechanism loads, radial load puts on radial loaded and puts, and radial load is transmitted to by radial loaded set and accompanies examination bearing outer ring,
And then be transmitted to accompany examination bearing inner race, test main shaft, then from test main shaft be in succession transferred to test bearing inner ring, test bearing
Outer ring.When axially loaded mechanism loads, axial force puts on left test bearing outer ring, and axial force is transferred to by left test bearing
Test main shaft, and then it is transferred to right test bearing inner ring, right test bearing outer ring successively.
Test head assembly 2 is passed through test head gland 21 and is fixed on base 14, and radial loaded mechanism 4 is fixed on test head pressure
On lid 21.The left and right of test head assembly is respectively arranged at two ends with left end cap 28, right end cap 29, and test head assembly is stepped up at left and right end
Between lid.Axially loaded mechanism 5 is fixed on left end cap 28.
Radial loaded mechanism 4 includes the radial loaded mechanism shell of sleeve-shaped, and radial loaded mechanism shell includes radially covering
Cylinder 42 and the radial loaded end cap 45 being arranged on radial direction sleeve ends, in radial direction sleeve 42, guiding is equipped with radial loaded head
41st, radial spring mounting seat 43, radial transducer fixed seat 44, radial loaded end cap 45 is arranged on the outer face of radial direction sleeve 42
Go up and fixed with radial loaded mechanism shell by screw.Radial loaded end cap 45 is threaded with radial loaded screw rod 46, footpath
To loading, screw rod 46 stretches in radial direction sleeve 42 and top pressure is in radial transducer fixed seat 44, radial transducer fixed seat and footpath
To being provided with radial pressure sensor 47, radial pressure sensor and radial spring mounting seat, radial transducer between spring mounting seat
Fixed seat is screwed.Radial loaded spring is folded between radial loaded head and radial spring mounting seat.
In order to improve the loading accuracy of radial loaded mechanism, meet the requirement of the loading force of miniature bearing, radial loaded end
Cover the outer peripheral face being provided with to radial loaded screw rod to apply stressed radial loaded mechanism pressure part and be arranged on radial loaded machine
Radial loaded mechanism flexibility top-pressure part between structure pressure piece and radial loaded screw rod.In the present embodiment, radial loaded mechanism
Pressure piece is to be threaded on radial loaded end cap to be used for applying stressed plug 481 to the outer peripheral face of radial loaded screw rod,
Radial loaded mechanism flexibility top-pressure part is the flexible resisting force column 482 being arranged between plug 481 and radial loaded screw rod.
Plug 481 and flexible resisting force column 482 correspond, and it is equal that flexible resisting force column 482 radially loads end cap circumferencial direction
Even be provided with three, during use by rotate plug make the inside precession of plug, plug to flexible resisting force column apply pressure, flexible resistance
Post and radial loaded screw top press-fit, under the pressure of flexible resisting force column acts on, the precession resistance of radial loaded screw rod increases.
Radial loaded screw rod is applied under identical active force, the slowing of radial loaded screw rod precession, precession amount is less, meanwhile,
Symmetrically arranged radial loaded mechanism flexibility top-pressure part also ensure that stablizing of radial loaded screw rod, and radial loaded screw rod is in rotation
Easily rock during entering.In the present embodiment, flexible resisting force column is rubber plunger, and in other embodiment, flexible resisting force column exists
Under conditions of not damaging the screw thread loading on screw rod, can be other elastomeric materials such as plastics.
Radial spring mounting seat 43 is provided with radial loaded spring 49, and radial spring is stretched in one end of radial loaded spring 49
In mounting groove in mounting seat, other end top pressure is assemblied on radial loaded head, and radial loaded spring 49 is along with radial loaded spiral shell
Bar extended line be axis circumferencial direction be uniformly provided with four, compared to existing technology in single spring, the present invention setting four
Individual radial loaded spring more can strengthen stability during adjustment radial loaded power for the radial loaded screw rod.In other enforcements
In example, the particular number of radial loaded mechanism flexibility top-pressure part and radial loaded spring can be according to the parameter of bearing test device
Setting at least three.
Axially loaded mechanism 5 includes axially loaded mechanism shell, and axially loaded mechanism shell includes axial sleeve 52 and sets
Put the axially loaded outer end cap 551 in axial sleeve end and axially loaded inner end cap 552, guiding dress in axially loaded inner end cap
It is furnished with axially loaded 51, be provided with axle spring mounting seat 531, axle spring top pressure seat 532 in axial sleeve 52, axially sense
Device fixed seat 54, axle spring mounting seat and axial sleeve axially load mechanism's force direction guiding cooperation,
In axle spring mounting seat 531, guiding is equipped with the attachment screw 533 corresponding with axially loaded spring 59, attachment screw
Threaded with axle spring top pressure seat 532, attachment screw is corresponded with axially loaded spring, axially loaded spring 59 is sheathed
On attachment screw and be folded between axle spring top pressure seat and axle spring mounting seat.The screw cap of attachment screw and axial direction
Spring mounting seat 531 block coordinates.
The left and right two ends of axial compressive force sensor 57 are respectively at axial sensor fixed seat 54 and axle spring top pressure seat 532
It is screwed.Axially loaded outer end cap 551 is threaded with axially loaded screw rod 56, and axially loaded screw rod stretches into axial sleeve 52
Interior and top pressure is in axial sensor fixed seat.
The outer peripheral face that axially loaded outer end cap is provided with to axially loaded screw rod applies stressed axially loaded mechanism pressure
Part and be arranged on the axially loaded mechanism flexibility top-pressure part 582 between axially loaded mechanism pressure part 581 and axially loaded screw rod.
Axially loaded mechanism pressure part is identical with the structure of radial loaded mechanism pressure part, axially loaded mechanism flexibility top-pressure part 582 with
Radial loaded mechanism flexibility top-pressure part structure is identical, and it will not go into details, and axially loaded mechanism flexibility top-pressure part 582 is also for energy
Enough improve the loading accuracy of radial loaded mechanism, meet the requirement to axially loaded power for the miniature bearing.The cloth of axially loaded spring
Office is identical with the layout of radial loaded spring, can loading force according to required for bearing test device difference, adjustment is axial
The concrete model of loading spring and radial loaded spring and quantity.It is equipped with axially loaded screw rod and radial loaded screw rod conveniently
The handle 7 loading.
Positioning bushing louvre 272 is additionally provided with positioning bushing 27, radial loaded is arranged with three and radially loads set week
To the radial loaded set louvre 243 being evenly arranged, test head gland 21 is provided with gland louvre 211, gland louvre 211
With bearing test device ft connection.Bearing test device is provided with by radial loaded mechanism perforation 271, positioning bushing louvre
272nd, radial loaded set louvre 243, the first heat dissipation channel of gland louvre 211.Left bushing location hole runs through a described left side
Bushing, right bushing location hole runs through described right bushing, the two ends of left bushing location hole outside with bearing test device respectively and
Radial loaded mechanism perforation 271 connection, the two ends of right bushing location hole are outside with bearing test device respectively and radial loaded machine
Structure perforation 271 connection, bearing test device is additionally provided with and is hit by right bushing by the second heat dissipation channel of left bushing location hole
3rd heat dissipation channel of location hole.Radial loaded set louvre 243 on radial loaded set 24 makes the first heat dissipation channel run through footpath
Cover to loading.In the present embodiment, bearing test device adopts grease lubrication, and bearing test device can adopt wind-cooling heat dissipating.Other
In embodiment, when bearing test device adopts oil lubrication, above-mentioned first heat dissipation channel is oil lubrication oil circulation passage, and bearing tries
Experiment device is cooled down with lubricating oil for Medium Oil.When bearing test device adopts oil lubrication, bearing test device can be with lubricating oil
For Medium Oil cooling.Using during oil lubrication, in left and right bushing through hole, setting plunger blocks left and right bushing through hole to reduce oil circuit
Gateway quantity, plunger is removable to be fixed in left and right bushing through hole, simplify oil circuit.Keep the first heat dissipation channel unimpeded, now
Lubricating oil passes through the first heat dissipation channel circulation, can arrange cooling device circulating oil path is cooled down in the fuel tank of lubricating oil,
Reach the purpose of radiating.
During the bearing test device assembling of the present invention, test head is put in base, connection nylon rope simultaneously drips to nylon rope
A little lubricating oil is it is ensured that two shaft coupling spacing 1.5-2mm；Left end cap is loaded test head gland, and attachment screw, it is integrally placed at examination
Test above head；Ensure that two shaft coupling spacing are constant, test head is fitted tightly with left end cap；Ensure that temperature sensor is installed to
Position, measurement head accurately fits in measured bearing outer ring, you can tighten T-shaped screw-nut；Right end cap is installed, and attachment screw.
Computer supervisory control system is opened in energising, opens monitoring programme main interface, will show examination in program main interface in real time
Test rotating speed, radial load, alternating water delivery time, bearing outer ring temperature, bear vibration, static current of lcd, test period, accumulative test
The parameters such as time.In comparison monitoring programme main interface, the show value of load, rotates the regulation of radial loaded mechanism first with spanner
Screw rod, makes adjusting screw rod move down thus compressing radial loaded spring, the size of power is shown to monitoring by pressure sensor
In program main interface, the size of applying power determines according to the test requirements document of test bearing, generally by the specified dynamic load of test bearing
The 15%～25% of lotus.The control method of axially loaded mechanism is identical with radial loaded mechanism control method.
In computer monitoring program, performance and resistance to is carried out according to the rotating speed step that is previously set to two sets of test bearings
Long property test, in whole process of the test test monitoring programme main interface show in real time test speed, radial load, axial load,
The parameters such as bearing outer ring temperature, bear vibration, static current of lcd, test period, accumulative test period, and above-mentioned test parameters is protected
Exist in the database of computer.Such as abnormal conditions in process of the test, is sent alarm and stopped by computer monitoring program
Machine.Shut down after off-test and split out two sets of test bearings, bearing outward appearance, bearing accuracy and clearance are detected, will simultaneously
The data of above-mentioned parameter carries out computer disposal, finally makes performance and the Durability Experiment Conclusion of test bearing.
The specific embodiment 2 of the bearing test device of the present invention, the present embodiment is only existed with the difference of above-mentioned specific embodiment 1
In：First heat dissipation channel is oil lubrication oil circulation passage, and bearing test device adopts oil lubrication, and bearing test device is to lubricate
Oil is Medium Oil cooling.Using during oil lubrication, as shown in fig. 7, setting plunger 10 blocks left and right bushing in left and right bushing through hole
To reduce the gateway quantity of oil circuit, plunger 10 is removable to be fixed in left and right bushing through hole through hole, simplifies oil circuit.Keep first
Heat dissipation channel is unimpeded, and now lubricating oil passes through the first heat dissipation channel circulation, can arrange cooling device pair in the fuel tank of lubricating oil
Circulating oil path is cooled down, and reaches the purpose of radiating.
In the other embodiment of the bearing test device of the present invention, above-mentioned positioning bushing can be cage construction；An above-mentioned left side,
Right bushing can be arranged on positioning bush inside, and the outer peripheral face of left and right bushing is threaded hole, is provided with by positioning bushing
Counterbore corresponding with screwed hole, is fixed together positioning bushing with left and right bushing by screw；Above-mentioned location hole can be blind
Hole；The above-mentioned resistance mechanism being constituted with flexible top casting die in pressure piece is applied towards perpendicular to load maintainer force to loading screw rod
During the pressure in direction, the installation site of resistance mechanism is unrestricted, and such as radial loaded mechanism flexibility top-pressure part can be with radial direction
Loading end cover rim test main shaft radial direction be set up in parallel, can be arranged on radial loaded set outer it is also possible to be arranged on radial loaded
Set is internal；Above-mentioned radial loaded mechanism can adopt and axially loaded mechanism identical structure.Above-mentioned radial loading device is permissible
Using with above-mentioned axial loading device identical structure；Above-mentioned axial/radial loading spring can also be arranged on screw rod and loading
Between head, spring top platen is set in one end of screw rod, corresponding spring top pressing board is arranged on loading head；Above-mentioned axial direction adds
Carry the pressure sensor put can be arranged between loading spring and loading head, on loading head, setting pressure sensor is fixed
Plate, now loading spring top pressure seat should be arranged between loading spring mounting seat and loading head, to facilitate the installation of attachment screw；
Above-mentioned flexible top casting die can be rubber screw, and now flexible top casting die and pressure piece are integral type structure；Radial loaded set dissipates
The quantity of hot hole is arranged as required on the premise of satisfaction can form thermal dissipating path, can be at least two；Above-mentioned positioning
Bushing louvre can be identical with radial loaded mechanism perforation structure, and the installation to facilitate radial loaded mechanism is it is also possible to make axle
Hold experimental rig to be applied to two sets or cover radial loading device more；Above-mentioned radial loaded set louvre can be at least two